Journal of the Operations Research Society of China ›› 2020, Vol. 8 ›› Issue (1): 145-164.doi: 10.1007/s40305-018-0219-1

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A Wide Neighborhood Interior-Point Algorithm for Convex Quadratic Semidefinite Optimization

Mohammad Pirhaji1, Maryam Zangiabadi2, Hossien Mansouri2, Ali Nakhaei1, Ali Shojaeifard1   

  1. 1 Department of Mathematics and Statistics, Imam Hossein Comprehensive University, Tehran, Iran;
    2 Department of Applied Mathematics, Shahrekord University, Shahrekord, Iran
  • Received:2017-08-17 Revised:2018-08-18 Online:2020-03-30 Published:2020-02-18
  • Contact: Mohammad Pirhaji, Maryam Zangiabadi, Hossien Mansouri, Ali Nakhaei, Ali Shojaeifard E-mail:Mojtabapirhaji@yahoo.com;Zangiabadi-m@sci.sku.ac.ir;mansouri@sci.sku.ac.ir;kpnakhaei@ihu.ac.ir;shojaeifarrd@ihu.ac.ir

Abstract: In this paper, we propose an interior-point algorithm based on a wide neighborhood for convex quadratic semidefinite optimization problems. Using the Nesterov-Todd direction as the search direction, we prove the convergence analysis and obtain the polynomial complexity bound of the proposed algorithm. Although the algorithm belongs to the class of large-step interior-point algorithms, its complexity coincides with the best iteration bound for short-step interior-point algorithms. The algorithm is also implemented to demonstrate that it is efficient.

Key words: Convex quadratic semidefinite optimization, Feasible interior-point method, Wide neighborhood, Polynomial complexity

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